Just a couple of points I think should be cleared up...
In Peru, you need not hold a Doctorate degree (PhD's per se don't exist here) to be a licensed Professional.
There are many great Professionals who do not hold a Doctorate for a very simple reason. In health (psychology, psychiatry, etc) it is more important to have a specialisation than a degree in investigation (which is really what a Doctorate is, in the end). So, many Psychologists and Psychiatrists (as other medical doctors) decide to go to institutes of specialisation.
That said, I recommend that, if you are seeking a cognitive-behavioural specialist, you call ITRE (Instituto de Terapia Racional Emotiva) 447-4386.
If the problem is substance abuse related, Edgar Rodriguez (who does hold a Doctorate) is specialised in said; he runs IPSICOC (Insituto de Psicología Cognitiva Conductual) 470-5498. He also works with other sorts of disorders.
If your friend is open to other sorts of therapy, I would highly recommend the CPPL (Centro de Psicoterapia Psicoanalítica) http://www.cppl.org/hojas/contactenos.php
Remember that finding an Expat LICENSED (in Peru) mental health professional is going to be quite difficult. But all these recommendations are top notch.
PM me if you have any questions or would like further recommendations. I am a psychologist, but do not do clinical work at the moment, but can help orient you.